RESPIRATORYCAS 67-56-1
Methanol
547k lb · +4% YoY
Methanol concentrations have fallen 27% since 2010.
GENERALCAS 7664-41-7
Ammonia
102k lb · +3% YoY
Ammonia concentrations are up 45% since 2010.
GENERALCAS N511
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
95k lb · +97% YoY
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations have more than doubled since 2015.
RESPIRATORYCAS 7647-01-0
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
59k lb · — YoY
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) concentrations have more than halved since 2010.
GENERALCAS 7783-06-4
Hydrogen sulfide
57k lb · +4% YoY
Hydrogen sulfide concentrations have fallen 29% since 2012.
CARCINOGENCAS 75-07-0
Acetaldehyde
38k lb · +7% YoY
Acetaldehyde concentrations have fallen 45% since 2010.
GENERALCAS 10049-04-4
Chlorine dioxide
34k lb · -8% YoY
Chlorine dioxide concentrations have fallen 32% since 2010.
RESPIRATORYCAS 1319-77-3
Cresol (mixed isomers)
24k lb · -2% YoY
Cresol (mixed isomers) concentrations are roughly unchanged from 2020.